Application of gradient plastic theory based on FEPG platform

CORC > 北京大学 > 地球与空间科学学院

	Application of gradient plastic theory based on FEPG platform
	Du, Xiu-Li ; Hou, Shi-Wei ; Lu, De-Chun ; Liang, Guo-Ping ; An, Chao
刊名	yantu gongcheng xuebaochinese journal of geotechnical engineering
	2012
英文摘要	Based on the FEPG platform, the finite element program using gradient plastic theory is developed to solve mesh dependence after strain softening. A u-?? algorithm with damp factor is proposed, which can solve the equation of displacement and yield surface simultaneously. The algorithm can not only get displacement and plastic multiplier together, but also avoid the stress haul back calculation in stress return algorithm widely used in finite element solution procedures. The softening modulus and the internal character length are introduced into D-P yield function, and the constitutive model can consider strain softening and gradient effect. The damp Newton algorithm is used to calculate softening problems. The results of a case study show that the u-?? algorithm with damp factor can be used to solve softening problems, the gradient plastic theory described by finite element weak form has no requirement of continuity, and appropriate outcome can be obtained by the first-order element, thus the mesh dependence of simulation is basically solved.; EI; 0; 6; 1094-1101; 34
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/410935]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Du, Xiu-Li,Hou, Shi-Wei,Lu, De-Chun,et al. Application of gradient plastic theory based on FEPG platform[J]. yantu gongcheng xuebaochinese journal of geotechnical engineering,2012.
APA	Du, Xiu-Li,Hou, Shi-Wei,Lu, De-Chun,Liang, Guo-Ping,&An, Chao.(2012).Application of gradient plastic theory based on FEPG platform.yantu gongcheng xuebaochinese journal of geotechnical engineering.
MLA	Du, Xiu-Li,et al."Application of gradient plastic theory based on FEPG platform".yantu gongcheng xuebaochinese journal of geotechnical engineering (2012).